111122100202021 has 16 divisors (see below), whose sum is σ = 112512811788864. Its totient is φ = 109738612295424.

The previous prime is 111122100202013. The next prime is 111122100202079. The reversal of 111122100202021 is 120202001221111.

It is a cyclic number.

It is not a de Polignac number, because 111122100202021 - 2³ = 111122100202013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111122100201986 and 111122100202004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111122160202021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 331038750 + ... + 331374256.

It is an arithmetic number, because the mean of its divisors is an integer number (7032050736804).

Almost surely, 2^{111122100202021} is an apocalyptic number.

It is an amenable number.

111122100202021 is a deficient number, since it is larger than the sum of its proper divisors (1390711586843).

111122100202021 is a wasteful number, since it uses less digits than its factorization.

111122100202021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346260.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 111122100202021 its reverse (120202001221111), we get a palindrome (231324101423132).

The spelling of 111122100202021 in words is "one hundred eleven trillion, one hundred twenty-two billion, one hundred million, two hundred two thousand, twenty-one".